Betts to be the 3rd Down Back?

[SBXVII]

Ok, here's my take. Portis is obviously the #1. Betts is servicable as a #2 back filling in as a relief RB to spell said Portis. Yes he did fill in nicely in 06 but that was his only good yr after how many yrs and some could argue he has not been given the chance to show a second time. I've heard arguements about his fumbling issues (which even I have mentioned) and have had it pointed out that he has only fumbled like two or three time total. My major issue is he is a similar style RB as Portis with out the break away speed. He's slower. Why keep two of the same style of RB's on the team when most teams have a between the tackles type of runner (Portis) and an edge runner (Alridge/Dorsey).

I have argued for Mason only cause if we are going to keep the same style of runner on the team as Portis then why not get younger while doing it and have Portis help develop/mold him for our future for when ever Portis decides to step down.

What I would like to see.....Portis (obviously), Betts or Mason, cut Rock for Alridge or Dorsey. If we are going to keep 3 active RB's it would be nice to have one be an edge runner. Rock sucks as a RB.